The Vortex 10″ 790 CFM Inline Fan is a high-capacity duct fan designed for large grow rooms, commercial greenhouse exhaust runs, and industrial ventilation applications where sustained airflow at scale matters. Running on a 10-inch duct connection and rated at 790 cubic feet per minute, this fan is built for situations where smaller units simply cannot keep up with the demand.
Vortex 10″ 790 CFM Inline Fan Specifications
Core specifications for the Vortex 10-inch inline fan derived from the product title and Vortex product line standards. The 790 CFM airflow rating positions this unit at the high end of the inline fan category, suited for 10-inch duct infrastructure.
| Specification | Value |
|---|---|
| Brand | Vortex (by Atmosphere) |
| Model / SKU | 18466DS |
| Airflow Rating | 790 CFM |
| Duct Diameter | 10 inches |
| Fan Type | Inline / Duct Fan |
| Category | Air Movement — Inline / Booster Fans |
Why Choose the Vortex 10″ 790 CFM Inline Fan
Inline fans in this size class serve a specific need: moving large volumes of air through extended duct runs without losing pressure. The Vortex brand has built its reputation on fans that hold their rated airflow under real-world back-pressure conditions, not just open-air bench tests. Here is what separates a 790 CFM 10-inch unit from smaller options:
- High airflow for large spaces: At 790 CFM, this fan can exchange the air in a 10×10-foot room at approximately 8 feet ceiling height roughly every minute — the kind of turnover rate needed to keep CO2, humidity, and temperature in range when canopy is dense and lights are running hard.
- 10-inch duct connection: Larger duct diameter means lower air velocity for a given volume, which translates to reduced noise and less turbulence compared to pushing the same CFM through a 6- or 8-inch duct.
- Inline mounting flexibility: The cylindrical housing sits in-line within a duct run, which keeps the fan out of the grow space, reduces radiated heat inside the tent or room, and allows placement in a remote utility area or ceiling plenum.
- Vortex brand reliability: Vortex (Atmosphere) fans are a well-established choice among commercial growers and integrators. The product line is widely distributed through professional hydroponic channels, which makes replacement parts and technical support accessible.
Best Uses for the Vortex 10″ 790 CFM Inline Fan
This fan is appropriate for applications where airflow demand exceeds what 6- or 8-inch fans can reasonably deliver. The 10-inch duct size and 790 CFM rating point to the following use cases:
- Large indoor grow rooms (10×10 ft and above): Primary exhaust or intake for rooms with heavy lighting loads and dense canopy. A single 790 CFM fan provides sufficient air exchange for rooms up to approximately 800–1,000 square feet depending on ceiling height and heat load.
- Commercial greenhouse ventilation: Supplemental mechanical ventilation in greenhouse bays where natural convection is insufficient during peak summer heat or in sealed CO2-enriched environments.
- Long duct runs: When exhaust must travel 15 feet or more through ductwork (with bends and a carbon filter), the higher static pressure capability of a 10-inch inline fan prevents the airflow drop-off that affects smaller, less powerful units.
- Multi-room daisy-chain setups: As a central exhaust fan drawing from multiple smaller rooms via a shared main duct trunk, replacing two or three smaller fans with a single high-capacity unit.
- Odor control systems: Paired with a 10-inch activated carbon filter as part of a negative-pressure odor control loop. If you are also managing intake filtration, see our Air Box pre-filter for compatible inline intake solutions.
Compatibility
The Vortex 10″ 790 CFM Inline Fan fits standard 10-inch flexible aluminum duct and rigid 10-inch HVAC duct. It operates on standard North American 120V AC power supply. Consider the following when planning your air system:
- Duct sizing: Use 10-inch duct throughout the run for full airflow. Reducing down to 8-inch or 6-inch at any point will create a bottleneck and increase back-pressure against the fan, reducing effective CFM.
- Carbon filters: Match the filter to the 10-inch flange. Undersized filters restrict airflow and reduce filter media contact time. Oversized filters can work with a reducer but are less efficient.
- Fan speed controllers: This fan is compatible with standard variable-voltage fan speed controllers. For automated climate management, it can be integrated with environmental controllers. The Autopilot PX2 Advanced Lighting Controller is an example of a multi-function controller used in rooms where lighting and climate are managed together.
- Supplemental circulation: Inline fans handle extraction; they do not replace in-canopy air circulation. For floor-level circulation in large rooms, a dedicated pedestal fan such as the Active Air HD 18″ Pedestal Fan handles horizontal air movement within the canopy.
Sources & Further Reading
Product specifications and airflow data are drawn from the Vortex (Atmosphere) product catalog. For full technical documentation, airflow performance curves, and current product line listings, visit the manufacturer directly:












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